US PATENT SUBCLASS 525 / 535-- .~.~ Solid polymer derived from sulfur-containing reactant

US PATENT SUBCLASS 525 / 535
.~.~ Solid polymer derived from sulfur-containing reactant

Current as of: June, 1999
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525 /	HD	SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*	DD	SYNTHETIC RESINS (Class 520, Subclass 1) {4}
50	DF	.~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32}
535		.~.~ Solid polymer derived from sulfur-containing reactant {2}
536	DF	.~.~.~> Solid polymer derived from sulfur dioxide and ethylenically unsaturated reactant
537	DF	.~.~.~> Solid polymer derived from alkali metal sulfide and halogenated aromatic reactant, e.g., polyarylene sulfide, etc.

DEFINITION

Classification: 525/535

Solid polymer derived from sulfur-containing reactant:

(under subclass 50) Subject matter involves processes of mixing a solid polymer derived from a sulfur-containing reactant with additional solid polymer with specified polymer-forming ingredients, specified intermediate condensation product, with chemical treating agent, or with an ethylenic agent; or products resulting from the above mixing processes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

537, for a process of mixing a solid polyphenylene sulfide with a chemical treating agent, with an additional solid polymer, with polymer-forming ingredients, or with an ethylenic agent when the disclosure is silent as to the mode of preparation of the polyphenylene sulfide or when such polymer is disclosed as being the reaction product of an alkali metal sulfide and a halogenated aromatic reactant.